Accumulation process of soil organic carbon in seasonally dry tropical forest and its response to the impact of forest conversion to rubber plantation

• Project/Area Number: 23710028
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: TORIYAMA Jumpei 独立行政法人森林総合研究所, 温暖化対応推進拠点, 任期付研究員 (00582743)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: カンボジア / ゴム林 / 熱帯季節林 / 土壌炭素 / 比重分画法

Research Abstract

Conversion of tropical dry forest to rubber plantation is widely observed in Southeast Asia at present. We conducted soil survey in seasonally dry tropical forests and rubber plantations in Cambodia to clarify the temporal changes in stock and physical composition of soil organic carbon during the land use change. The labile carbon pool in forest soil which is composed of fine plant debris rapidly decreased after the clear cutting of forest and planting of rubber trees. On the other hand, the impact of re-planting of old rubber plantations on soil organic carbon pool was small compared to that of the establishment of new rubber plantations.

Research Products

• [Journal Article] Physicochemical Properties and Carbon Storage of Forest Soils on Cambodian Basalt : A Preliminary Study with a Density Fractionation Approach (2013)
  • Author(s): J. Toriyama, S. Ohta, Y. Ohnuki, A. Imaya, E. Ito, M. Kanzaki, K. Hirai, M. Araki, Y. Kiyono, S. Chann
  • Journal Title: Japan Agricultural Research Quarterly Volume: 47(2) Pages: 217-226
  • Peer Reviewed
• [Journal Article] Physicochemical Properties and Carbon Storage of Forest Soils on Cambodian Basalt (2013)
  • Author(s): Jumpei Toriyama et al.
  • Journal Title: Japan Agricultural Research Quarterly Volume: 47(2) Pages: 217-226
  • Peer Reviewed
• [Journal Article] Comparison of depth-and mass-based approaches for estimating changes in forest soil carbon stocks : A case study in young plantations and secondary forests in West Java, Indonesia (2011)
  • Author(s): J. Toriyama, T. Kato, C.A. Siregar, H.H. Siringoringo, S. Ohta, Y. Kiyono
  • Journal Title: Forest Ecology and Management Volume: 262 Issue: 9 Pages: 1659-1667
  • DOI: 10.1016/j.foreco.2011.07.027
  • Peer Reviewed
• [Journal Article] Soil Carbon Stock in Cambodian Monsoon Forests (2011)
  • Author(s): J. Toriyama, S. Ohta, Y. Ohnuki, E. Ito, M. Kanzaki, M. Araki, S. Chann, B. Tith, S. Keth, K. Hirai, Y. Kiyono
  • Journal Title: Japan Agricultural Research Quarterly Volume: 45(3) Pages: 309-316
  • Peer Reviewed
• [Presentation] 熱帯林のゴム林転換に伴う土壌炭素の物理的組成の変化 (2014)
  • Author(s): 鳥山淳平他
  • Organizer: 日本熱帯生態学会
  • Place of Presentation: 宇都宮大学
  • Year and Date: 2014-06-14
• [Presentation] Estimation of soil carbon stock and its change in tropical monsoon forest region (2013)
  • Author(s): J. Toriyama et al.
  • Organizer: International workshop on Monitoring of Forest Ecosystems: Where Do We Stand? p.6
  • Place of Presentation: 東京大学生産技術研究所
  • Year and Date: 2013-12-02
• [Presentation] 森林の常緑・落葉性が堆積有機物と鉱質土壌の炭素蓄積に与える影響 (2013)
  • Author(s): 鳥山淳平他
  • Organizer: 第124回日本森林学会大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2013-03-26
• [Presentation] 熱帯季節林の堆積有機物と鉱質土層の炭素蓄積量および森林タイプとの対応 (2012)
  • Author(s): 鳥山淳平他
  • Organizer: 日本土壌肥料学会2012年大会
  • Place of Presentation: 鳥取大学
  • Year and Date: 2012-09-04
• [Presentation] 比重分画を用いた土壌炭素蓄積の評価 -熱帯季節林域における立地との対応 - (2012)
  • Author(s): 鳥山淳平他
  • Organizer: 第123回日本森林学会大会
  • Place of Presentation: 宇都宮大学
  • Year and Date: 2012-03-28
• [Presentation] 比重分画を用いた土壌炭素蓄積の評価 - 熱帯季節林域における立地との対応 - (2012)
  • Author(s): 鳥山淳平ら
  • Organizer: 第123回日本森林学会大会
  • Place of Presentation: 宇都宮大学（宇都宮市）
• [Presentation] Estimation of soil carbon stock and its change in tropical monsoon forest region
  • Author(s): Jumpei Toriyama et al.
  • Organizer: International workshop on Monitoring of Forest Ecosystems: Where Do We Stand?
  • Place of Presentation: 東京大学（目黒区）
• [Presentation] 熱帯林のゴム林転換に伴う土壌炭素の物理的組成の変化
  • Author(s): 鳥山淳平ら
  • Organizer: 日本熱帯生態学会
  • Place of Presentation: 宇都宮大学（宇都宮市）
• [Presentation] 熱帯季節林の堆積有機物と鉱質土層の炭素蓄積量および森林タイプとの対応
  • Author(s): 鳥山淳平ら
  • Organizer: 日本土壌肥料学会2012年鳥取大会
  • Place of Presentation: 鳥取大学（鳥取市）
• [Presentation] 森林の常緑・落葉性が堆積有機物と鉱質土壌の炭素蓄積に与える影響
  • Author(s): 鳥山淳平ら
  • Organizer: 第124回日本森林学会大会
  • Place of Presentation: 岩手大学（盛岡市）
• [Remarks] 森林総合研究所広報・研究最前線:「土壌炭素の経年変化を捉える計算法を開発」
  • URL: http://www.ffpri.affrc.go.jp/research/saizensen/2011/20111222-02.html
• [Remarks] 森林総合研究所広報・研究最前線:「カンボジア熱帯林の『赤い土』はいかにして炭素を貯めこむか?」
  • URL: http://www.ffpri.affrc.go.jp/research/saizensen/2012/20121025-02.html